Constant cooling the various components of diesel engine has a number of functions except for ().
A、A.good lubrication
B、B.low thermal stress
C、C.good mechanical properties
D、D.acid corrosion
A、A.good lubrication
B、B.low thermal stress
C、C.good mechanical properties
D、D.acid corrosion
A、effective cylinder scavenging and cooling B、constant pressure from the turbochargers C、cooler operation of the exhaust system D、effective constant pressure for turbocharger operation
A、Maintains a constant head on the system B、Reduces the likelihood of air or steam pockets formation C、Provides a low pressure point for the addition of makeup cooling water D、All of the above
A、regulate the fuel supply B、maintain a constant fuel viscosity at the fuel valves C、maintain efficient cooling D、alter the fuel density
A、reduce water temperature B、reduce water turbulence C、provide an air cushion D、allow for an increase in water volume as the engine warms up
A、Cooling water is alkalescence B、cooling water is acidity C、cooling water has salinity D、cooling water has impurity
A、A.the central cooling system, different B、B.the central cooling system, the same C、C.the open cooling system, different D、D.the open cooling system, the same
A、Because the piston is exposed to very high temperature, it must be cooled B、The lower the piston cooling temperature is, the better it is C、Both water and lube oil can be used as coolant D、One of the piston cooling methods is vibration cooling, with better effect
A、entirely constant pressure B、entirely constant temperature C、a combination of constant volume and constant pressure D、a combination of constant temperature and constant pressure